Nuclear Techniques ›› 2016, Vol. 39 ›› Issue (6): 60502-060502.doi: 10.11889/j.0253-3219.2016.hjs.39.060502

• NUCLEAR PHYSICS, INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Monte Carlo simulation on demagnetization of artificial spin ice

YU Liju1, MENG Xiangyu2, LI Junqin2, CAO Jiefeng2, WANG Yong2, JING Chao1, WU Yanqing2, TAI Renzhong2   

  1. 1 Department of Physics, Shanghai University, Shanghai 200444, China;
    2 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Zhangjiang Campus, Shanghai 201204, China
  • Received:2016-01-25 Revised:2016-04-12 Online:2016-06-10 Published:2016-06-12
  • Supported by:

    Supported by National Natural Science Foundation of China (No.11475251, No.11275255, No.11225527, No.5137111), and the Key Project of Shanghai Municipal Science and Technology Commission (No.13JC402400)

Abstract:

Background: Recently, the artificial spin ice (ASI) draws a wide attention for its exotic phenomenon and potential applications. Previous works mainly studied the Square and Kagome lattice systems, and extensive researches concentrated upon how to achieve the ground state. It turned out to be experimentally difficult to get the absolute ground state of Kagome ASI because of the high frustration. Purpose: Here we propose a new structure based on Kagome lattice, which is just locally frustrated. In order to get good approximation of its ground state, we employed a Monte Carlo simulation on demagnetization process with three methods. Methods: The Monte Carlo simulation was carried on a system including 21×21 cells, and an extra field had been employed to drive the spins overturning. Results & Conclusion: It turned out that the rotating magnetic field was more effective to get to the ground state, and induced the emergence of various magnetic structures.

Key words: ASI, Monte Carlo simulation, Demagnetization

CLC Number: 

  • TL65